Hi Greg

Chuff solder pad for the Bachmann Spectrum Forney 1:20.3, is J1-5.

Thanks for all your help.

It is greatly appreciated.

Nev

Hi Greg

Can I use a multimeter to determine if there is a "chuff" on J2-2?

Nev

Photo of Bachmann Spectrum Forney PCB  G809X+PCB01 sent.

Thank you.

Thanks for the reply Greg. Always helpful and generous.

I have the diagram. I tried to attach it to this post but the technology wouldn't allow it for some reason.

I think the S5 is actually the sensor switch - 2 chuffs or 4 chuffs.

I tried to upload a photo of the Forney PCB but there is an issue with space even though the photo is only 35kb. I need to contact the administrator.

I think the pads on the side J1-5 and J2-2 may be the chuff outputs for the optical sensors, as in the Bachmann 2-6-6-2 loco (82894.pdf page 12).

But I'm not sure and I don't like to see smoke escaping from the electronics.

Apologies for not posting these but the system won't allow me.

Thanks again.

Hi All
I have a Bachmann Spectrum Forney 1:20.3 with sound installed.
I would like to connect the sound board to the optical chuff but don't know which pad on the PCB to connect it to.

In other Bachmann locos (K27 and C19) there is a pad on the PCB labelled Chuff.

Any suggestion gratefully accepted.
Many thanks.

Nev Stone

 

Thank you Stan.

Very much appreciated.

Nev

I have been working on a new Bachmann 4-6-0 PNP loco #170.
Does anyone know how the chuff mechanism works and if it is adjustable, please?
I am familiar with the chuff mechanism in the Bachmann Anniversary locos.
Is this mechanism the same.

Thank you.

Nev Stone